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SVTPerformance's Chain of Restaurants
The Blower Bistro
Anyone have a built motor Mach..
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<blockquote data-quote="Fourcam330" data-source="post: 2148934" data-attributes="member: 24445"><p>For maximum power from stock cams use 99/01 Cobra intake cams, with 99/01/03/04 exhaust cams (they are the same grind). The 03/04 intake cams are from the Navigator 5.4s, and have no place in a performance vehicle of any sort. 96/98 intake cams have the same lift/duration as the 99/01s, but they also feature minutely staggered intake lobes due to the B heads twin ports. The slight offset promoted better swirl, and makes the 99/01s the best choice for a tumble port head. </p><p>Performing said swap on an optimized N/A bolt on 4.6L nets around 20-25rwhp. With a blower the gains would be even better. </p><p>Have you thought about aftermarket cams? Not that you'll need them to hit your peak HP goal, but they can give you more area under the curve. Crower stage II billets and their single spring valvetrain (good to .495" lift and 7500rpm) would serve you well.</p><p>You can hit 650rwhp with a D1 NP. :beer:</p></blockquote><p></p>
[QUOTE="Fourcam330, post: 2148934, member: 24445"] For maximum power from stock cams use 99/01 Cobra intake cams, with 99/01/03/04 exhaust cams (they are the same grind). The 03/04 intake cams are from the Navigator 5.4s, and have no place in a performance vehicle of any sort. 96/98 intake cams have the same lift/duration as the 99/01s, but they also feature minutely staggered intake lobes due to the B heads twin ports. The slight offset promoted better swirl, and makes the 99/01s the best choice for a tumble port head. Performing said swap on an optimized N/A bolt on 4.6L nets around 20-25rwhp. With a blower the gains would be even better. Have you thought about aftermarket cams? Not that you'll need them to hit your peak HP goal, but they can give you more area under the curve. Crower stage II billets and their single spring valvetrain (good to .495" lift and 7500rpm) would serve you well. You can hit 650rwhp with a D1 NP. :beer: [/QUOTE]
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The Blower Bistro
Anyone have a built motor Mach..
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